magent
Deterministic published-formula arithmetic plus ICD-10-CM, RxNorm, and LOINC. Pay in USDC on Base via x402.
Searchofflineeip155:8453Exactvia cdp
RiskeEndocarditisCardiac-surgeryInfectionCalculator
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far.
$13.75
Verified settled volume
2,750 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 20:34Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x836Be278f1739fB4308091cD1852F7971Bc19Ee2The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/riske",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"withdrawDelay": 86400,
"receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "batch-settlement",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
],
"resource": {
"url": "https://api.magentlab.com/api/calc/riske",
"tags": [
"riske",
"endocarditis",
"cardiac-surgery",
"infection",
"calculator"
],
"mimeType": "application/json",
"description": "Olmos 2017 RISK-E (Risk-Endocarditis) for in-hospital mortality after cardiac surgery in active left-sided IE. Age <=51: 0; 52-63: 9; 64-72: 13; >=73: 14. Flags: prosthetic_infection +6, periannular_complications +5, staphylococcus_aureus_or_fungi +9, acute_renal_failure +5, septic_shock +7, cardiogenic_shock +15, thrombocytopenia +7. Returns score and max_score 68 only. Not a diagnosis or surgery decision. magent does not examine the valve or read echo.",
"serviceName": "magent"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"age": 50,
"septic_shock": false,
"thrombocytopenia": false,
"cardiogenic_shock": false,
"acute_renal_failure": false,
"prosthetic_infection": false,
"periannular_complications": false,
"staphylococcus_aureus_or_fungi": false
}
},
"output": {
"type": "json",
"example": {
"score": 0,
"formula": "riske",
"citation": {
"id": "olmos-2017",
"doi": "10.1136/heartjnl-2016-311093",
"pmid": "28432158",
"title": "Risk score for cardiac surgery in active left-sided infective endocarditis",
"source": "Heart. 2017;103(18):1435-1442",
"authors": "Olmos C, Vilacosta I, Fernández C, et al."
},
"age_years": 50,
"max_score": 68,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": true
},
{
"factor": "prosthetic_infection",
"points": 0,
"present": false
},
{
"factor": "periannular_complications",
"points": 0,
"present": false
},
{
"factor": "staphylococcus_aureus_or_fungi",
"points": 0,
"present": false
},
{
"factor": "acute_renal_failure",
"points": 0,
"present": false
},
{
"factor": "septic_shock",
"points": 0,
"present": false
},
{
"factor": "cardiogenic_shock",
"points": 0,
"present": false
},
{
"factor": "thrombocytopenia",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "RISK-E = age (<=51: 0, 52-63: 9, 64-72: 13, >=73: 14) + prosthetic_infection 6 + periannular_complications 5 + staphylococcus_aureus_or_fungi 9 + acute_renal_failure 5 + septic_shock 7 + cardiogenic_shock 15 + thrombocytopenia 7; max 68. Score and max_score only; not a mortality percent. Olmos 2017 Table 2 and Table 3. Not Park 2016. Not Duke"
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"required": [
"age",
"prosthetic_infection",
"periannular_complications",
"staphylococcus_aureus_or_fungi",
"acute_renal_failure",
"septic_shock",
"cardiogenic_shock",
"thrombocytopenia"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Olmos 2017: <=51 scores 0; 52-63 scores 9; 64-72 scores 13; >=73 scores 14. Age 51 scores 0; 52 scores 9; 63 scores 9; 64 scores 13; 72 scores 13; 73 scores 14. magent does not examine the patient."
},
"septic_shock": {
"type": "boolean",
"description": "Septic shock as assigned by the caller (Olmos 2017). true or false. +7 if true. magent does not diagnose shock."
},
"thrombocytopenia": {
"type": "boolean",
"description": "Thrombocytopenia as assigned by the caller (Olmos 2017 thrombocytopaenia, <150000 platelets/mm3). true or false. +7 if true. magent does not interpret a platelet count."
},
"cardiogenic_shock": {
"type": "boolean",
"description": "Cardiogenic shock as assigned by the caller (Olmos 2017). true or false. +15 if true. magent does not diagnose shock or decide surgery."
},
"acute_renal_failure": {
"type": "boolean",
"description": "Acute renal failure as assigned by the caller (Olmos 2017; GFR <60 mL/min/1.73 m2 in the derivation). true or false. +5 if true. magent does not compute GFR."
},
"prosthetic_infection": {
"type": "boolean",
"description": "Prosthetic-valve infection as assigned by the caller (Olmos 2017). true or false. +6 if true. magent does not examine the valve."
},
"periannular_complications": {
"type": "boolean",
"description": "Periannular complications (abscess, pseudoaneurysm, fistula, or prosthetic dehiscence) as assigned by the caller (Olmos 2017). true or false. +5 if true. magent does not read echocardiography."
},
"staphylococcus_aureus_or_fungi": {
"type": "boolean",
"description": "Staphylococcus aureus or fungi as assigned by the caller (Olmos 2017 virulent microorganism). true or false. +9 if true. magent does not interpret cultures."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x836B…19Ee2. The signed payment is good for 10 minutes.
- Paid to
- 0x836B…19Ee2
- USD Coin contract
- 0x8335…02913
- Payment window
- 10 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"paymentFlow": "upfront",
"resourceUrl": "https://api.magentlab.com/api/calc/riske",
"assetTransferMethod": "eip3009"
},
"payTo": "0x836Be278f1739fB4308091cD1852F7971Bc19Ee2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 600
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"items": [
{
"age": 50,
"septic_shock": false,
"thrombocytopenia": false,
"cardiogenic_shock": false,
"acute_renal_failure": false,
"prosthetic_infection": false,
"periannular_complications": false,
"staphylococcus_aureus_or_fungi": false
},
{
"age": 50,
"septic_shock": false,
"thrombocytopenia": false,
"cardiogenic_shock": false,
"acute_renal_failure": false,
"prosthetic_infection": false,
"periannular_complications": false,
"staphylococcus_aureus_or_fungi": false
}
]
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"path": "/api/calc/riske",
"count": 2,
"items": [
{
"score": 0,
"formula": "riske",
"citation": {
"id": "olmos-2017",
"doi": "10.1136/heartjnl-2016-311093",
"pmid": "28432158",
"title": "Risk score for cardiac surgery in active left-sided infective endocarditis",
"source": "Heart. 2017;103(18):1435-1442",
"authors": "Olmos C, Vilacosta I, Fernández C, et al."
},
"age_years": 50,
"max_score": 68,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": true
},
{
"factor": "prosthetic_infection",
"points": 0,
"present": false
},
{
"factor": "periannular_complications",
"points": 0,
"present": false
},
{
"factor": "staphylococcus_aureus_or_fungi",
"points": 0,
"present": false
},
{
"factor": "acute_renal_failure",
"points": 0,
"present": false
},
{
"factor": "septic_shock",
"points": 0,
"present": false
},
{
"factor": "cardiogenic_shock",
"points": 0,
"present": false
},
{
"factor": "thrombocytopenia",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "RISK-E = age (<=51: 0, 52-63: 9, 64-72: 13, >=73: 14) + prosthetic_infection 6 + periannular_complications 5 + staphylococcus_aureus_or_fungi 9 + acute_renal_failure 5 + septic_shock 7 + cardiogenic_shock 15 + thrombocytopenia 7; max 68. Score and max_score only; not a mortality percent. Olmos 2017 Table 2 and Table 3. Not Park 2016. Not Duke"
},
{
"score": 0,
"formula": "riske",
"citation": {
"id": "olmos-2017",
"doi": "10.1136/heartjnl-2016-311093",
"pmid": "28432158",
"title": "Risk score for cardiac surgery in active left-sided infective endocarditis",
"source": "Heart. 2017;103(18):1435-1442",
"authors": "Olmos C, Vilacosta I, Fernández C, et al."
},
"age_years": 50,
"max_score": 68,
"components": [
{
"value": 50,
"factor": "age",
"points": 0,
"present": true
},
{
"factor": "prosthetic_infection",
"points": 0,
"present": false
},
{
"factor": "periannular_complications",
"points": 0,
"present": false
},
{
"factor": "staphylococcus_aureus_or_fungi",
"points": 0,
"present": false
},
{
"factor": "acute_renal_failure",
"points": 0,
"present": false
},
{
"factor": "septic_shock",
"points": 0,
"present": false
},
{
"factor": "cardiogenic_shock",
"points": 0,
"present": false
},
{
"factor": "thrombocytopenia",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"formula_expression": "RISK-E = age (<=51: 0, 52-63: 9, 64-72: 13, >=73: 14) + prosthetic_infection 6 + periannular_complications 5 + staphylococcus_aureus_or_fungi 9 + acute_renal_failure 5 + septic_shock 7 + cardiogenic_shock 15 + thrombocytopenia 7; max 68. Score and max_score only; not a mortality percent. Olmos 2017 Table 2 and Table 3. Not Park 2016. Not Duke"
}
]
}
},
"iconUrl": "https://api.magentlab.com/favicon.ico"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"body": {
"type": "object",
"required": [
"items"
],
"properties": {
"items": {
"type": "array",
"items": {
"type": "object",
"required": [
"age",
"prosthetic_infection",
"periannular_complications",
"staphylococcus_aureus_or_fungi",
"acute_renal_failure",
"septic_shock",
"cardiogenic_shock",
"thrombocytopenia"
],
"properties": {
"age": {
"type": "integer",
"description": "Age in years (integer 18-120). Olmos 2017: <=51 scores 0; 52-63 scores 9; 64-72 scores 13; >=73 scores 14. Age 51 scores 0; 52 scores 9; 63 scores 9; 64 scores 13; 72 scores 13; 73 scores 14. magent does not examine the patient."
},
"septic_shock": {
"type": "boolean",
"description": "Septic shock as assigned by the caller (Olmos 2017). true or false. +7 if true. magent does not diagnose shock."
},
"thrombocytopenia": {
"type": "boolean",
"description": "Thrombocytopenia as assigned by the caller (Olmos 2017 thrombocytopaenia, <150000 platelets/mm3). true or false. +7 if true. magent does not interpret a platelet count."
},
"cardiogenic_shock": {
"type": "boolean",
"description": "Cardiogenic shock as assigned by the caller (Olmos 2017). true or false. +15 if true. magent does not diagnose shock or decide surgery."
},
"acute_renal_failure": {
"type": "boolean",
"description": "Acute renal failure as assigned by the caller (Olmos 2017; GFR <60 mL/min/1.73 m2 in the derivation). true or false. +5 if true. magent does not compute GFR."
},
"prosthetic_infection": {
"type": "boolean",
"description": "Prosthetic-valve infection as assigned by the caller (Olmos 2017). true or false. +6 if true. magent does not examine the valve."
},
"periannular_complications": {
"type": "boolean",
"description": "Periannular complications (abscess, pseudoaneurysm, fistula, or prosthetic dehiscence) as assigned by the caller (Olmos 2017). true or false. +5 if true. magent does not read echocardiography."
},
"staphylococcus_aureus_or_fungi": {
"type": "boolean",
"description": "Staphylococcus aureus or fungi as assigned by the caller (Olmos 2017 virulent microorganism). true or false. +9 if true. magent does not interpret cultures."
}
}
},
"maxItems": 25,
"minItems": 1
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"const": "POST"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 20:34Z
- Last indexed by Roundhouse
- 2026-09-07 06:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-10 11:45Z
- x402 version
- 2
- Max timeout
- 600s
- Liveness probe
- HTTP 0
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service magent and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=magent' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.magentlab.com/api/calc/riske, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.